Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

In impure push mode, don't allow more than one yypstate to be allocated

Browse Source 
since multiple impure parsers would corrupt yynerrs.
* data/push.c (yypstate_allocated): New static global variable
initialized to 0.
(yypull_parse): If yypstate_new returns 0, don't report it as memory
exhaustion if yypstate_allocated is 1, but still return 2.
(yypstate_new): Invoke yyerror and return 0 if yypstate_allocated is
already 1.  Otherwise, set it to 1.
(yypstate_delete): Set it to 0.
* tests/push.at (Push Parsing: Multiple impure instances): New test
case.
This commit is contained in:
Joel E. Denny
2007-08-18 00:45:52 +00:00
parent 9987d1b3cc
commit 1b17b01d0f
5 changed files with 231 additions and 131 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
ChangeLog
View File

@@ -1,3 +1,17 @@
2007-08-17 Joel E. Denny <jdenny@ces.clemson.edu>
In impure push mode, don't allow more than one yypstate to be allocated
since multiple impure parsers would corrupt yynerrs.
* data/push.c (yypstate_allocated): New static global variable
initialized to 0.
(yypull_parse): If yypstate_new returns 0, don't report it as memory
exhaustion if yypstate_allocated is 1, but still return 2.
(yypstate_new): Invoke yyerror and return 0 if yypstate_allocated is
already 1. Otherwise, set it to 1.
(yypstate_delete): Set it to 0.
* tests/push.at (Push Parsing: Multiple impure instances): New test
case.
2007-08-17 Bob Rossi <bob@brasko.net>
* doc/bison.texinfo (Push Decl): Document the push parser.